private void MapCompositeKey(OperationExecutionContext context)
{
// TODO: AY: Review this later
var domain = context.Session.Domain;
var nodeId = context.Session.StorageNodeId;
var keyInfo = Key.TypeReference.Type.Key;
var hierarchy = keyInfo.Hierarchy;
if (hierarchy.Key.Fields.Count == 1 && !hierarchy.Key.Fields[0].IsEntity)
{
return;
}
var columnIndex = 0;
var sourceTuple = Key.Value;
var resultTuple = Tuple.Create(sourceTuple.Descriptor);
var hasTemporaryComponentBeenFound = false;
foreach (var keyField in hierarchy.Key.Fields)
{
if (keyField.Parent != null)
{
continue;
}
if (keyField.IsPrimitive)
{
resultTuple.SetValue(columnIndex, sourceTuple.GetValue(columnIndex));
columnIndex++;
}
else
{
var association = keyField.Associations.Last();
var componentKeyValue = Tuple.Create(association.TargetType.Key.TupleDescriptor);
sourceTuple.CopyTo(componentKeyValue, columnIndex, keyField.MappingInfo.Length);
var componentKey = Key.Create(domain, nodeId, association.TargetType.UnderlyingType,
TypeReferenceAccuracy.BaseType, componentKeyValue);
var componentKeyLength = componentKey.Value.Count;
Key mappedKey;
if (context.KeyMapping.TryGetValue(componentKey, out mappedKey))
{
mappedKey.Value.CopyTo(resultTuple, 0, columnIndex, componentKeyLength);
hasTemporaryComponentBeenFound = true;
}
else
{
componentKeyValue.CopyTo(resultTuple, 0, columnIndex, componentKeyLength);
}
columnIndex += componentKeyLength;
}
}
if (hasTemporaryComponentBeenFound)
{
var result = Key.Create(domain, nodeId, Key.TypeReference.Type.UnderlyingType,
TypeReferenceAccuracy.BaseType, resultTuple);
context.AddKeyMapping(Key, result);
}
}
private void MapNewKey(OperationExecutionContext context)
{
var domain = context.Session.Domain;
if (Key.IsTemporary(domain))
{
var mappedKey = Key.Generate(context.Session, Key.TypeInfo);
context.AddKeyMapping(Key, mappedKey);
}
}
